Is -1.4 greater than 0.3​

No, it is not, since -1.4 is a negative number and 0.3 is a positive number. Hope this helps!

Don’t worry about it

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.